Works great everything you'd expect from this buffer only negative I have for this order was the shipping took an extra 3 days because of the post office
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Information
Product reviews
Specs of The AR-TT
Overview
The Armaspec Sound Mitigation Buffer™ Gen3 (SMB™) H3 is a single-stage captured drop-in replacement for your standard AR-15 buffer and spring. Silent operation. Adjustable spring tension. H3 weight — the recommended threshold for forced reset trigger builds, suppressed AR-15s, and short-gas platforms. Lifetime warranty. 100% USA made. $59.99.
If you're running a forced reset trigger or Super Safety on a suppressed rifle, a short-gas or sub-16" build, or any platform that demands maximum cycle control — the H3 SMB Gen3 is the buffer. More mass than the H2 minimum, silent captured operation, and fully adjustable spring tension at the same $59.99 price point.
FRT & Super Safety Recommended: The SMB Gen3 H3 at 5.6 oz equivalent weight exceeds both the H2 minimum and the H3 recommended threshold for reliable forced reset trigger and Super Safety operation on AR-15 platforms. It is especially recommended for suppressed builds, short-gas systems, and any forced reset trigger build where maximum cycle control is required. Works with the Partisan Disruptor FRT, AS Designs ARC-Fire V2, Hoffman Tactical Super Safety, and any other drop-in forced reset system on a standard AR-15 platform.
Specifications
| Product | Sound Mitigation Buffer™ Gen3 — H3 |
|---|---|
| SKU | ARM258-H3 |
| System Type | Single-stage captured drop-in — buffer + spring + guide rod |
| Actual Weight (Complete) | 6.71 oz |
| Equivalent Weight | 5.6 oz (H3) |
| Spring Adjustment | Trimmable at 0.25 lbs per coil — max 12 coils |
| Platform | AR-15 — standard carbine buffer tube |
| FRT Compatible | Yes — exceeds H3 recommended threshold |
| Super Safety Compatible | Yes |
| Suppressed Build Compatible | Yes — recommended for suppressed FRT builds |
| Patent | Pat. Pend. |
| Warranty | Lifetime |
| Origin | 100% USA Made |
| Price | $59.99 |
What's Included
- 1x Polymer base guide rod
- 1x Adjustable main spring
- 1x H3 weight buffer
Features
- Single-stage captured system — buffer, spring, and guide rod drop in as one unit
- H3 equivalent weight (5.6 oz) — recommended for forced reset trigger builds, suppressed builds, and short-gas platforms
- Silent operation — spring rides on polymer guide rod, eliminating metal-on-tube contact noise
- Reduces felt recoil — greater mass for smoother, more controlled deceleration and return
- Adjustable spring tension — trim at 0.25 lbs per coil, up to 12 coils maximum
- Drop-in replacement — no gunsmithing, no modification to lower or buffer tube
- Lifetime warranty
- 100% USA made
H2 vs H3 — Which SMB Do You Need?
| SMB Gen3 H2 | SMB Gen3 H3 (This Product) | |
|---|---|---|
| Equivalent Weight | 4.7 oz | 5.6 oz |
| FRT Threshold | Minimum viable | Recommended |
| Suppressed Builds | Marginal | Yes — recommended |
| Short Gas / Sub-16" | May need tuning | Recommended |
| Standard Carbine 16" | Works well | Works well — more margin |
| Price | $59.99 | $59.99 |
Not sure which to choose? Go H3. At the same price, more buffer weight gives you more margin for reliable forced reset trigger function — especially as your round count climbs and component wear starts to affect timing. The H3 is the safer long-term choice for any FRT or Super Safety build.
Why Silent Matters on a Forced Reset Trigger Build
A standard buffer spring scrapes against the inner wall of the buffer tube every time the BCG cycles. On a forced reset trigger or Super Safety build — where cycling rates are significantly higher than standard semi-auto fire — that friction compounds. More cycles per second means more heat, more noise, and faster spring fatigue.
The SMB Gen3 eliminates spring-to-tube contact entirely. The polymer guide rod centers the spring throughout the cycling stroke, front and back, keeping metal off metal. The result is quieter operation, less heat in the tube, and a spring that maintains consistent tension through higher round counts — which means more consistent timing for your forced reset trigger reset cycle.
At $59.99 with a lifetime warranty, the H3 SMB Gen3 is the best value heavy buffer available for any forced reset trigger or Super Safety build on an AR-15 platform.
Installation
- Insert polymer base with guide rod into the buffer tube
- Insert the spring onto the guide rod
- Insert the buffer over the spring
No tools required. Drop-in replacement for any standard AR-15 carbine buffer tube setup.
Related Products & Resources
- Armaspec SMB Gen3 H2 Silent Captured Buffer — $59.99
- Odin Works HFRT All-In-One Buffer System — $79.99
- Odin Works H-FRT9 — AR9 / 9mm Blowback Buffer — $79.99
- H2 Heavy Buffer 4.6 oz — V2 Reciprocating
- H3 Heavy Buffer 5.4 oz Tungsten — V2 Reciprocating
- Partisan Disruptor FRT — AR-15 Forced Reset Trigger ($299.99)
- The LAT — 3-Position Match Grade FRT ($374.99)
- Partisan Disruptor Ambi FRT — SBW Selector ($324.99)
- Hoffman Tactical Super Safety
- AS Designs ARC-Fire V2
- All AR-15 Buffers for FRT Triggers
FRT Resources
The AR-Takedown Tool (AR-TT)
- weight is only 58 grams, under 3oz
-Length: 6 5/16"
-Diameter 1/2"
-This is the ONLY USA made gun smithing tool, gun cleaning tool, building tool, disable tool on the market.
Customer Reviews
Extremely easy to install and put together. Great quality
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
I recommend 💯 %, great product and good Quality 👍
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
This is my girlfriend shooting the AR with the H3 buffer and Partisan disruptor Frt. Works perfect. Thank u the take down tool team.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
I recently installed an FRT in a lower I use for multiple uppers of different caliber. I couldn't get it to operate properly, and after a little research I discovered I needed an H3 buffer. Since I already had a captured system in the lower I wanted to stick to that design. I found an H3 captured buffer system for a great price on your website and ordered it. Simply replaced the old buffer, drove to the range, and opened fire. The video shows firing the 3rd mag. The barrel heat was the only reason I stopped. Great buffer system.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
I reached out to the guys and asked their recommendation on a buffer for a new build. After giving them all the sowcs of my gun. They recommended an Armaspec sound mitigation buffer. I put everything together this weekend and everything is running perfect. What a difference. The buffer shipped fast. Will definitely buy from them in the future
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
I used it in my radian model one works fine thanks
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
New H3 Buffer made my FRT run like butter!!! I will definitely be buy more!
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Worked very well to slow the action down on my new FRT . Had a blast this weekend chewed through 500 round no problems. One note you will have to remove the trigger to install this buffer as it is one piece.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
I installed but have not go to range yet. I have a 16 inch suppressed waiting to spit down range.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Nice buffer and easy to install.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Shipped petty fast got them in 4 days. Haven't tried yet but looks like good quality
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Works great
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Great product!
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Great stuff. Worked perfectly!
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Different feel love it
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Great item at the price
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Looks great but I’m still accumulating all the parts for the build. Sadly, I cannot say how it functions as of yet.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
The garage I received were excellent when I finally received them fortunately I paid for an expedited shipping and Not only was it expedited but it took about three times longer than what it would have taken if I sent it snail mail and when I received it there were parts missing it was not a good experience working with takedown tools all the items I did receive were excellent they did finally refund my money you know I asked from the buffers to still be sent it was never sent in just refunded I'm hoping they were just having a bad couple of weeks because their price to see comparable to everyone else out there and again they have nice products and a large selection I'll probably give them another shot and if it's a good experience I will redo my review at this point in the game though not very impressed with the company but I do.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Thanks
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Easy installation, gets rid of that annoying ar twang
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Great product at a good price
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Quick delivery, easy install and my rifle has lost the ar twang.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Sounds way better so I had to buy another
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Great company and products. Usps shipping on this was slow but that is on usps as they bounced it around the US.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Fit and finish perfect. Fast shipping. Very happy. Thanks
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Needed to remove the hammer to be able to get it in. But should workout great. Simple to order from fast shipping would definitely recommend.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Works great in 300 blackout pistol
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Awesome product made it much quieter
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Love it runs flawless shipping was super fast would recommend 👌
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Works better than I expected. Installed it in my 300blk out AR-15 pistol with a FRS safety and it completely cured my problem
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Awesome, buffer completely silent perfect for my FRT
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Thank you!
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Works great! Well built!
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
It isn't that the buffer doesn't function, I have not been able to get the BCG and the buffer to function together. When placed in the same AR they do not seem to allow the trigger to function. Placed in separate ARs and they function fine.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
As advertised, simple and quite!
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
works as intended
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer
Works flawlessly.
Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer